Effects of Primary Air Jet on Flow and Combustion Performance for a Dual-Stage Swirler Combustor

摘要：

The influences of primary jets on aerodynamic flow field and pollutant emissions within a dual-stage swirler combustor are investigated experimentally. A two-dimensional Particle Image Velocimetry (PIV) is used to map both the non-reacting and reacting flow fields within the primary zones of the model gas turbine combustor with a dual-stages swirler at different primary jets diameters and locations. The profiles of mean velocity, turbulent velocity and Reynolds shear stress are measured simultaneously. The multiple-point thermocouple probe is employed to obtain the radial profiles of the exit gas temperature. The multiple-point gas sampling probe is used to measure radial distributions of the exit pollutant concentrations. Experimental data show that the central recirculation zone is significantly affected by aerodynamic interactions between primary air jets and the swirling flow. The primary jets play a quite important role to enhance flame stability and achieve satisfactory outlet gas temperature profiles and pollutant emission characteristics for a gas turbine combustor.

关键词： primary jet dual-stage swirler combustor flow field piv measurement

作者: Dang Xin-xian Zhao Jian-xing Yan Yin-wen Liu-Yong

作者单位: College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics Nanjing, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics Nanjing,

会议类型: 国际会议

会议名称: The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)

会议地点: 南京

会议语种:英文

页码: 388-394

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）